T30015 HSS 135 Deg. Shank Twist Drill Set with Cobalt Finish. Special M35 cobalt construction features 5% cobalt, high hardness, and stable performance for added...
IRWIN Drill Bit Set, M35 Cobalt Steel, 29-Piece (3018002). Ideal for drilling in tough metal, including heavy-duty abrasive alloy metal drilling on hardened steel. Made...
115 PIECE PREMIUM QUALITY COBALT DRILL BIT SET. THESE ARE NOT COATED DRILL BITS. THE REAL McCOY COBALT DRILL BITS. CUTS CAST IRON-HEAT TREATED STEEL-STAINLESS...
115 PIECE PREMIUM QUALITY COBALT DRILL BIT SET. THESE ARE NOT COATED DRILL BITS. THE REAL McCOY COBALT DRILL BITS. CUTS CAST IRON-HEAT TREATED STEEL-STAINLESS...